| A. R. McCabe | |
| Office: | 27th Lieutenant Governor of Idaho |
| Term: | March 20, 1946 – January 6, 1947 |
| Governor: | Arnold Williams |
| Predecessor: | Arnold Williams |
| Successor: | Donald S. Whitehead |
| Birth Date: | 1 June 1896 |
| Birth Place: | New Westminster, British Columbia |
| Death Place: | St. Maries, Idaho |
| Spouse: | Esther Edeen (1930–Apr 10, 1985; her death) |
| Party: | Democrat |
Ambrose Roscoe McCabe (June 1, 1896 – May 24, 1985) was a Democratic politician from Idaho. He served as the 27th lieutenant governor of Idaho.[1] He was born in New Westminster, British Columbia. He was a dentist and died at his home in St. Maries, Idaho in 1985.[2]